2BW2C-BK-CV-009Callahan

myplotmate LLC Covered Equipment Certification Attestation Letter DATE: Jul. 15, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BW2C-BK-CV-009 myplotmate LLC (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. myplotmate LLC (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates)as an entity producing “covered” equipment. myplotmate LLC (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Alena Huben Title: Manager Company Name: myplotmate LLC Date: Jul. 15, 2026 Document Ref: DXCYM-9R7NL-GJE7L-4BT9JPage 1 of 1 REF. NUMBER DXCYM-9R7NL-GJE7L-4BT9J DOCUMENT COMPLETED BY ALL PARTIES ON 21 JUL 2026 02:48:12 UTC SIGNERTIMESTAMPSIGNATURE ALENA HUBEN EMAIL [email protected] SENT 21 JUL 2026 02:48:12 SIGNED 21 JUL 2026 02:48:12 IP ADDRESS 47.231.145.130 LOCATION SAN DIEGO, UNITED STATES Signed with PandaDoc PAGE 1 OF 1

myplotmate LLC * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter DATE: Jul. 16, 2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2BW2C-BK-CV-009 FRN of applicant: 0038638490 Per section 2.911(d)(7) of the FCC rules,[ myplotmate LLC](“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: myplotmate LLC FCC Registration Number (FRN): 0038638490 Physical U.S. Company Address: 4653 Carmel Mountain Rd, Ste 308 #AA203, San Diego, California 92130, United States Contact Person: Alena Huben Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed (if different from Applicant): Signed: Printed name: Alena Huben Title: Manager Company Name: myplotmate LLC Date: Jul. 16, 2026 Signed: Printed name: Alena Huben Title: Manager Company Name: myplotmate LLC Date: Jul. 16, 2026 Document Ref: AJRKJ-AHD3R-FQNIX-FAGQPPage 1 of 1 REF. NUMBER AJRKJ-AHD3R-FQNIX-FAGQP DOCUMENT COMPLETED BY ALL PARTIES ON 20 JUL 2026 20:47:52 UTC SIGNERTIMESTAMPSIGNATURE ALENA HUBEN EMAIL [email protected] SENT 20 JUL 2026 20:47:51 SIGNED 20 JUL 2026 20:47:52 IP ADDRESS 47.231.145.130 LOCATION SAN DIEGO, UNITED STATES Signed with PandaDoc PAGE 1 OF 1

myplotmate LLC DATE: Jul. 15, 2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen HUAK Testing Technology Co., Ltd. (1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with myplotmate LLC (4653 Carmel Mountain Rd, Ste 308 #AA203, San Diego, California 92130, United States) Signed: Printed name: Alena Huben Title: Manager Company Name: myplotmate LLC Date: Jul. 15, 2026 Document Ref: MGNC8-OJNW7-AYKYB-TFOYVPage 1 of 1 REF. NUMBER MGNC8-OJNW7-AYKYB-TFOYV DOCUMENT COMPLETED BY ALL PARTIES ON 21 JUL 2026 02:44:16 UTC SIGNERTIMESTAMPSIGNATURE ALENA HUBEN EMAIL [email protected] SENT 21 JUL 2026 02:44:16 SIGNED 21 JUL 2026 02:44:16 IP ADDRESS 47.231.145.130 LOCATION SAN DIEGO, UNITED STATES Signed with PandaDoc PAGE 1 OF 1

myplotmate LLC DATE: Jul. 15, 2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, Signed: Printed name: Alena Huben Title: Manager Company Name: myplotmate LLC Date: Jul. 15, 2026 Document Ref: RPTC2-3CLDI-DXXEL-EMCKFPage 1 of 1 REF. NUMBER RPTC2-3CLDI-DXXEL-EMCKF DOCUMENT COMPLETED BY ALL PARTIES ON 21 JUL 2026 02:46:35 UTC SIGNERTIMESTAMPSIGNATURE ALENA HUBEN EMAIL [email protected] SENT 21 JUL 2026 02:46:35 SIGNED 21 JUL 2026 02:46:35 IP ADDRESS 47.231.145.130 LOCATION SAN DIEGO, UNITED STATES Signed with PandaDoc PAGE 1 OF 1

Request for Confidentiality: myplotmate LLC DATE: Jul. 16, 2026 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BW2C-BK-CV-009 Product Name: Callahan Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) •Schematics •Block diagram •Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); •External Photos •Internal Photos •User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Document Ref: ISG2A-JUWVF-XB8VJ-DE3BQPage 1 of 2 Signed: Printed name: Alena Huben Title: Manager Company Name: myplotmate LLC Date: Jul. 16, 2026 Document Ref: ISG2A-JUWVF-XB8VJ-DE3BQPage 2 of 2 REF. NUMBER ISG2A-JUWVF-XB8VJ-DE3BQ DOCUMENT COMPLETED BY ALL PARTIES ON 21 JUL 2026 02:47:17 UTC SIGNERTIMESTAMPSIGNATURE ALENA HUBEN EMAIL [email protected] SENT 21 JUL 2026 02:47:17 SIGNED 21 JUL 2026 02:47:17 IP ADDRESS 47.231.145.130 LOCATION SAN DIEGO, UNITED STATES Signed with PandaDoc PAGE 1 OF 1

FCC ID LABEL: Ca. 5mm x 15mm Label Location FCC ID: 2BW2C-BK-CV-009

FCC RF Exposure EUT Description: Callahan Model No.: BK-CV-009 FCC ID: 2BW2C-BK-CV-009 1. L imits According to KDB 447498 D01 General RF Exposure Guidance v06 The 1‐g and 10‐g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max power of channel, including tune‐up tolerance, mW)/(min. test separation distance, mm)]ꞏ[√f(GHz)]≤3.0 for 1‐g SAR and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Expos ure Evaluation SRD: EI RP(dBm)=85.24(dBuV/m)-95.2=-9.96(dBm) Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separati on distance mm Result Limit SAR Test Exclusion 433.9231 -9.96 -9±1(-8) 0.158 5 0.021 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2607010673-E, antenna gain=0dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.021 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ꞏ[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Page 1 of 32 Report No.: HK2607010673-E Prepared For: myplotmate LLC 4653 Carmel Mountain Rd, Ste 308 #AA203, San Diego, California 92130, United States Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Jul. 01, 2026 ~ Jul. 09, 2026 Date of Report: Jul. 09, 2026 Report Number: HK2607010673-E FCC Test Report Test Report On Behalf of myplotmate LLC For Callahan Model No.: BK-CV-009 FCC ID: 2BW2C-BK-CV-009 Applica Address Manufa Address Produc Trade M Product Model a Standa This pu b Shenzh the mat e assume due to it Date of Date (s ) Date of Test Re s ant’s Name s ................ acturer's Na s ................ ct Descripti Mark ........... t Name ........ and/or Type rds ............ blication ma en HUAK T erial. Shenz e liability for ts placemen Test .......... ) of Perform Issue ......... sult ............ e ................. ................. ame .......... ................. on ................. .................... Reference ................. ay be reprod Testing Tech zhen HUAK damages r nt and conte .................. mance of Tes .................. .................. Testing E Technica l Authoriz e Test R . : myplotm . : 4653 C a 92130, U . : Shenzhe . : 1005,Bu District, S . : N/A : Callaha n : BK-CV- 0 . : FCC Pa r ANSI C6 duced in wh hnology Co. K Testing Te resulting fro ext. ................ : sts ............ : ................ : ................ : ngineer l Manager ed Signatory Page 2 of 3 Result Ce mate LLC armel Mount United State en Baco Ind ilding 3th,J Shen Zhen n 009 rt15 Subpar 63.10: 2020 hole or in pa ., Ltd. is ack echnology C om the reade Jul. 01, 20 Jul. 09, 20 Pass y 2 ertificatio tain Rd, Ste es dustrial Co., iangshi Ro a , China rt C, Sectio 0 art for non-c knowledged Co., Ltd. take er's interpre 026 ~ Jul. 09 026 Len L Sliver W Jason Z Rep on e 308 #AA2 Ltd ad, Matian S n 15.231 commercial d as copyrig es no respo etation of th 9, 2026 Liao Wan Zhou port No.: HK 203, San Die Street,Guan l purposes a ght owner a onsibility for he reproduc K2607010673 ego, Califor ng Ming as long as t nd source o r and will no ed material 3-E rnia the of ot Page 3 of 32 Report No.: HK2607010673-E Contents 1 . Summary ............................................................................................................................................................. 5 1.1 Test Procedures and Results .................................................................................................................. 5 1.2 Information of the Test Laboratory .......................................................................................................... 5 1.3 Measurement Uncertainty........................................................................................................................ 6 2. General Information ............................................................................................................................................ 7 2.1 Description of Device (EUT) .................................................................................................................... 7 2.2 Description of Test Setup ......................................................................................................................... 8 2.3 Description of Support Units .................................................................................................................... 9 2.4 List of Channels ......................................................................................................................................... 9 2.5 Test Equipment List for All Test Items .................................................................................................. 10 3. AC Conducted Emission Test .......................................................................................................................... 11 3.1 AC Conducted Power Line Emission Limit .......................................................................................... 11 3.2 Test Setup ................................................................................................................................................ 11 3.3 Test Procedure ........................................................................................................................................ 11 3.4 Test Data .................................................................................................................................................. 12 4. Radiated Emissions .......................................................................................................................................... 13 4.1 Standard Applicable ................................................................................................................................ 13 4.2 Test Procedure ........................................................................................................................................ 13 4.3 Corrected Amplitude & Margin Calculation ......................................................................................... 15 4.4 Environmental Conditions ...................................................................................................................... 15 4.5 Test Data .................................................................................................................................................. 15 5. 20dB Occupy Bandwidth Test ......................................................................................................................... 22 5.1 Standard Applicable ................................................................................................................................ 22 5.2 Test Procedure ............................................................................................................…

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ITE M Model Name Center Frequency MAX.GAIN Polarization Azimuth Beam Pattern Impedance Omni-directional Tested Products. Antenna 1:Internal antenna Frequency=433.9231MHz. Product:Internal antenna SPEC Internal antenna 433.9231 MHz 0dBi Linear, Vertical Antenna length: 3mm Liandong (Shenzhen) Technology Co., Ltd. Room 407, Building A, Abao Xuming Technology Park, No. 1193 Guangan Road, Guanlan Street, Longhua District, Shenzhen City

Test Model: BK-CV-009 Radiated Emission RF Conducted Emission